var MathUtil = function(version, programmer) {  
    this.name = name;  
    this.programmer = programmer;  
}; 
MathUtil.prototye = {
    constructor: MathUtil,  

}

// var m1 = new MathUtil("william",["william"]);  
// m1.programmer.push("william2");  
// var m2 = new MathUtil("peter",["peter"]);  
// m1.programmer.push("peter2");  